linux-kernel - [PATCH] staging: fieldbus: Remove usage of the deprecated ida_simple

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Date: Sun, 14 Jan 2024 11:10:15 +0100
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Sven Van Asbroeck <TheSven73@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	linux-staging@...ts.linux.dev
Subject: [PATCH] staging: fieldbus: Remove usage of the deprecated ida_simple_xx() API

ida_alloc() and ida_free() should be preferred to the deprecated
ida_simple_get() and ida_simple_remove().

Note that the upper limit of ida_simple_get() is exclusive, but the one of
ida_alloc_max() is inclusive. So a -1 has been added when needed.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/staging/fieldbus/anybuss/arcx-anybus.c | 6 +++---
 drivers/staging/fieldbus/dev_core.c            | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/fieldbus/anybuss/arcx-anybus.c b/drivers/staging/fieldbus/anybuss/arcx-anybus.c
index 34d18b09bedd..fcd3e3722ae0 100644
--- a/drivers/staging/fieldbus/anybuss/arcx-anybus.c
+++ b/drivers/staging/fieldbus/anybuss/arcx-anybus.c
@@ -285,7 +285,7 @@ static int controller_probe(struct platform_device *pdev)
 		}
 	}
 
-	id = ida_simple_get(&controller_index_ida, 0, 0, GFP_KERNEL);
+	id = ida_alloc(&controller_index_ida, GFP_KERNEL);
 	if (id < 0) {
 		err = id;
 		goto out_reset;
@@ -318,7 +318,7 @@ static int controller_probe(struct platform_device *pdev)
 out_dev:
 	put_device(cd->class_dev);
 out_ida:
-	ida_simple_remove(&controller_index_ida, id);
+	ida_free(&controller_index_ida, id);
 out_reset:
 	gpiod_set_value_cansleep(cd->reset_gpiod, 1);
 	return err;
@@ -330,7 +330,7 @@ static void controller_remove(struct platform_device *pdev)
 	int id = cd->class_dev->id;
 
 	device_unregister(cd->class_dev);
-	ida_simple_remove(&controller_index_ida, id);
+	ida_free(&controller_index_ida, id);
 	gpiod_set_value_cansleep(cd->reset_gpiod, 1);
 }
 
diff --git a/drivers/staging/fieldbus/dev_core.c b/drivers/staging/fieldbus/dev_core.c
index bf1812d8924f..370a229443a1 100644
--- a/drivers/staging/fieldbus/dev_core.c
+++ b/drivers/staging/fieldbus/dev_core.c
@@ -247,7 +247,7 @@ static void __fieldbus_dev_unregister(struct fieldbus_dev *fb)
 		return;
 	device_destroy(&fieldbus_class, fb->cdev.dev);
 	cdev_del(&fb->cdev);
-	ida_simple_remove(&fieldbus_ida, fb->id);
+	ida_free(&fieldbus_ida, fb->id);
 }
 
 void fieldbus_dev_unregister(struct fieldbus_dev *fb)
@@ -267,7 +267,7 @@ static int __fieldbus_dev_register(struct fieldbus_dev *fb)
 		return -EINVAL;
 	if (!fb->read_area || !fb->write_area || !fb->fieldbus_id_get)
 		return -EINVAL;
-	fb->id = ida_simple_get(&fieldbus_ida, 0, MAX_FIELDBUSES, GFP_KERNEL);
+	fb->id = ida_alloc_max(&fieldbus_ida, MAX_FIELDBUSES - 1, GFP_KERNEL);
 	if (fb->id < 0)
 		return fb->id;
 	devno = MKDEV(MAJOR(fieldbus_devt), fb->id);
@@ -290,7 +290,7 @@ static int __fieldbus_dev_register(struct fieldbus_dev *fb)
 err_dev_create:
 	cdev_del(&fb->cdev);
 err_cdev:
-	ida_simple_remove(&fieldbus_ida, fb->id);
+	ida_free(&fieldbus_ida, fb->id);
 	return err;
 }
 
-- 
2.43.0